Note: You may use the Excel calculator for these exercises and submit the sheet to show your calculations.

 

Exercise 1

Ten individuals went on a low–fat diet for 12 weeks to lower their cholesterol. Evaluate the data below. Do you think that their cholesterol levels were significantly lowered? (Show all your work i.e. Ho and Ha, p-value, conclusion in words)

Table 1

 

Exercise 2

Average entry level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed to be approximately the same. (Source: http://www.graduatingengineer.com3). A recruiting office thinks that the average mechanical engineering salary is actually lower than the average electrical engineering salary. The recruiting office randomly surveys 50 entry level mechanical engineers and 60 entry level electrical engineers. Their average salaries were $46,100 and $46,700, respectively. Their standard deviations were $3450 and $4210, respectively. Conduct a hypothesis test to determine if you agree that the average entry level mechanical engineering salary is lower than the average entry level electrical engineering salary. (Show all your work i.e. Ho and Ha, p-value, conclusion in words)

 

 

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Status NEW Posted 13 Aug 2017 04:08 PM My Price 10.00

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